query reply to moef -...
Post on 28-Oct-2019
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1) One of the specific TOR was “A clarification from GPCB whether addition of this
unit would be absorbed by Dahej-1”. However, PP has not submitted the
clarification. Copy of the recommendation of GPCB for the proposed project to be
submitted.
Answer:
2) Details of measures to be taken while handling NaCN.
Answer: Storage of Sodium Cyanide:
Sodium Cyanide will store in closed room of 10 m x 10 m and it will locked always. Only authorised
person will be allowed in storage room with PPE’s. Key of lock will be kept only authorised person.
Sodium Cyanide Transportation, Unloading and handling Procedure:
SR.NO. ACTIVITY TYPE OF POSSIBLE
HAZARD
MITIGATION MEASURES
1 Transportation of
Sodium Cyanide by
road truck
Leakage, Spillage,
Toxic release in
case of direct
contact or
ingestion
• Close pack M.S. drums with seal.
• Transport by dedicated container
• No hazard during transportation due to solid pallets.
• Isolate the contaminated area
2 NACN storage and
handling safety
Leakage, Spillage,
Toxic release in
case of direct
contact or
ingestion
• Separate stored in double locked room.
• To adopt close procedure like charging with hopper
hood & blanketing by nitrogen pressure.
• Away from water sources.
• Total body protection suite will be provided to charging
operator with air line respirator.
• Safe operating (Charging) procedure will be prepared
and displayed in process and storage area.
• Total close process for charging and handling.
• Antidote kit for cyanide will be kept ready in OHC.
• Training is being provided to handle NACN,
• SCBA sets are available in handling area.
3) Chlorine handling and management system to be provided.
Answer: Activity: CHLORINE (CL2): Storage Of Chlorine Tonner At Storage Facility And Handling Of
Chlorine:
No Hazard Sub Hazard Status
Risk Assessment with
consideration of control
measures Control Measures will be
provided.
Severity Probability Risk
1 Fall of Tonner
from FLT.
Body injury and
property
damage
A Serious Highly
unlikely
Moderate FLT will be maintained in good
condition. Train driver will be
employed. Good road condition
will be maintained. Tonner will
be transferred only when Tonner
with Valve protecting cap. SBA
sets, Cl2 Emergency Kit, Air line
Respirator, All ADEQUATE PPE
etc. Will be provided as required.
FRP hood with alkaline scrubber
will be provided. Continuous
monitoring system for chlorine
will be installed and maintained.
On site Off site Emergency plan
will be revised, amended and
rehearsed on regular basis.
Toxic gas
release if
Tonner valve
breakage.
E Serious Highly
unlikely
Moderate
2 Bursting of
Tonner / Valve
due to storage
in open area.
Toxic gas
release
E Serious Highly
unlikely
Moderate Same as above and chlorine will
be stored and used under Shed
to protect from direct sun light.
Tested Tonner will only be
utilized & CCE approval will be
taken. Hot work will be
performed under safety work
permit only.
3 Leakage from
transfer line.
Eye contact A Serious Highly
unlikely
Moderate Chlorine transfer line will be
maintained in good condition.
Will be checked periodically.
Good and sound material will be Skin contact A Moderate Unlikely Moderate
No Hazard Sub Hazard Status
Risk Assessment with
consideration of control
measures Control Measures will be
provided.
Severity Probability Risk
Inhalation of
gas
A Serious Unlikely Significant used for transfer line. Apron,
Hand gloves, gumboot, goggles,
helmet and canister mask will be
provided Ammonia torch will be
provided.
Following measure will be provided- proactively and maintained, to control / reduce the risk,
for PROPOSED FACILITY:
1. CHLORINE (CL2)
1) CCE approved premises with adequate arrangement provided.
2) Apron, Hand gloves, gumboot, goggles & helmet provided
3) ISI Portable fire extinguisher & Hydrant line is provided as per TAC norms.
4) Sufficient amount of sand/soil are kept to control any spillage.
5) Flame proof fitting provided.
6) Emergency CL2 kit.
7) Ammonia Torch.
8) FRP Hood with blower with & pack tower with dil. NaOH circulation tank for emergency
scrubbing
9) Sufficient Nos. of SBA sets & 2 No. of Air line mask.
10) Continuous monitoring system with alarm.
11) OHT crane for Cylinder handling.
12) Water pit.
13) Wind Cock for wind direction.
14) Preventive maintenance on regular basis.
Mitigation Measures in case of Chlorine Leakage:
• Evacuate the area in down wind direction: Evacuate area in down wind direction up to 300 meter.
• Do not direct water at spill or source of leak.
• If possible, turn leaking containers so that gas escapes rather than liquid.
• Use Chlorine Emergency Kit to attend the leak.
• Absorb the fumes through Chlorine Hood with blower.
Preventive measures to avoid such emergency:
♦ Chlorine Emergency Kit will be procured and kept ready at chlorine shed.
♦ Chlorine Hood with blower will be provided with scrubbing arrangement.
♦ SCBA sets will be kept ready at chlorine handling area.
♦ Safety Shower and eye wash will be provided in Chlorine shed area.
♦ Chlorine absorption system will be provided. In case of chlorine leakage in chlorine shed it will be
suck through blower and it will be scrubbed in Caustic scrubber.
♦ Emergency siren and wind sock will be provided.
♦ Tele Communication system and mobile phone will be used in case of emergency situations for
communication.
♦ First Aid Boxes and Occupational health centre will be made at site.
♦ Emergency organization and team will be prepared as per On site-Off site emergency planning.
♦ Full body protection suite and other PPEs will be kept ready in ECC at site.
♦ Emergency team will be prepared and trained for scenario base emergency. Like Toxic control team,
Fire control team, First aid team, Communication and general administration team, Medical team
etc.
4) Clarification regarding notification of GIDC Dahej -1 to be obtained from Industry
Department.
Answer:
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